Apparatus for the manufacture of hollow bodies from fiber pulp



C. MUNZE Feb. 16, 1932.

APPARATUS FOR THE MANUFACTURE OF HOLLOW BODIES FROM FIBER PULP Filed Nov. 28, 1928 III/A'IIIIIII/ I14 VIII //v vct/v T02. C421. 5 7 1% M maybe Patented Feb. l6, 1932 UNITED STATES PATENT OFFICE om KUNZI, OI' BPANDLU-EIBWEBDEB, GERMANY, ASBIGNOB, BY MESNE ASSIGN- mere, TO REYES CONTAINER CORPORATION, OF BOSTON, MASSACHUSETTS, A

UDBPORATION OI MAINE AI'I'ARATUS 3'03 IAN'UIACTURE OI HOLLOW BODIES F301]: FIBER PULP Application fled Iovember 88, 1988, Serial No. 322,452, and in Germany September 7, 1928s I the fiber pulp and one or more gaseous fluids.

under pressure to such moulds and for controlling the opening and closing of the latter.

The object of the invention is toprovide improved apparatus of the character referred to, and the invention mainly consists in combining a plurality of the said moulds into a single compound mould and in supplying thereto the fiber pulp, compressed air, etc. from a sin le machine over a distribution point in sue a manner that the opening, the.

closing and the actual moulding process 18 eflected simultaneously in all the individual moulds of the com ound mould, and that the individual moul s deliver the finished moulded articles also simultaneously.

The invention is of great economical importance. The output of the apparatus is increased in proportion to the number (2 3 or more) of moulded articles simultaneously delivered b the compound mould, so that wages an overhead expenses and the allowances for depreciatiorare considerably reduced. Substantial advantages are also obtained from a thermal point of view, since the unavoidable heat losses are distributed over a larger number of finished articles. Further, there is also a saving in power, com pressed air, steam, etc., since the power gen erated and the us fluid under pressure de (1 upon the quantity of heat required.

a rule the improved apparatus will be used for the simultaneous manufacture of hollow bodies of the same kind or the same weight; it is, however, to be understood that hollow bodies of different kinds or weights produced together, for instance two receptac es and their-two respective-lids.

Experience has further shown that in order to obtain perfect hollow bodies, it is necessary -since the distribution of the pul thereto from the common distribution cham er is not uniform. I 7

Referring to the accompanying drawings,

which illustrates the invention, by way of example,

Figures 1, 2 and show a form of construction by means'of which two receptacles and the two corresponding lids are produced simultaneously,

Figure 1 .being a sectional elevation through the improved apparatus,

- Figure 2 a transverse section along the line A--B in Figure 1, and.

Figure 3 a cross-section along the line C--D in Figure 1.

Figures 4, 5 and 6 illustrate a modified arrangement of a portion of the apparatus,

F1 re 4 being a sectional elevation showin t e distribution chamber and the moulds,

igure 5 being a plan view of the bottom part, and

Figure 6 being a pers ective view of the distribution chamber wit the hollow bodies attached thereto.

Referring to the 'constructionillustrated in Figures 1 to 3, the fiber pulp is admitted into the pipe a from the machine (not shown) and flows into a distribution chamber b and hence through a, (Z, c and f into the respective moul s ones of which, viz. g and-k are used for the production of receptacles and the two inner ones, viz. h and i, for the production of the corresponding lids. The four moulds g, h, 'i and k are so constructed and united that they can be opened simultaneously b turning around a hinge. In this examp e o construction, the permeable side walls are secured to h, fl: and k, the two outer.

the two awsjl and m which canbe turned around the ivots n and a respectively to open the mo ds when the hollow bodies are formed. The bottoms p, q, 1" and s of the four individual moulds are secured to the bottom jaw t, which is capable of effecting anopenmg movement at the proper moment by turning around the pivot u.

The passages c, d, e and f have such a crosssection, length and curvature that they will.

ensure that the walls of the hollow bodies will be of uniform thickness.

As in the present example the inner mould h and c' require a' smaller amount of pulp than the outer moulds g and 7c, the passages d and e have a smaller cross-section than the passages a and f. Instead of reducing the cross-section of the passages, other means may be employed for preventing a superfl-uous amount of pulp from reaching the smaller moulds h and 2'. Thus, for instance, the length s'of the passages 61 and e may be increased by the insertion'of bends or the internal resistances of these passages may be altered by the provision of constrictions thereon, which constrictions may be made adjustable if desired.

The lengths of the passages between the distribution chamber and the moulds maybe varied according to the shape that it is desired to impart to the hollow bodies. In the case of small hollow bodies to be produced simultaneously in a large number, the individual moulds used therefor may be placed very close or immediately next to the distribution point, in which case asymmetrical arrangement is preferably employed. Such a form of construction is illustrated in Figures 4 -to 6, in which '22 is the common distribution chamberI-and-w are the individual moulds which are combined together into a single unit capable of being swung 'open along the plane EF in Figure 4, the bottom part a: of the mould moving downwards.

In order to facilitate the removal of the numerous hollow bodies from the compound mould according to a further feature of the invention, a portion of the distribution chamber o is also made with permeable walls so that a body is obtainedsuch as shown in Figure 6, fromfwhich the individual hollow bodies 3) are then removed.

I wish it to be understood that the details for carrying the invention into efi'ect may be modified in various respects without in any way departing from the spirit of the invention.

What I claim is h 1. In apparatus for manufacturing hollow bodies from fiber pulp, the combination of a compound mould comprising a plurality of individual moulds having permeable walls, the said compound mould having a unitary outer wall common to all the individual -moulds,, on which outer wall the permeable.

walls of all the individual moulds are mountmon to the individual moulds of the compound mould and with means for simultaneously opening the individual moulds.

2. In apparatus for manufacturing hollow bodies from fiber pulp, the combination of a compound mould comprising a plurality of individual moulds having permeable walls, the said compound mould having a unitary outer wall common to all the individual moulds, on which outer wall the permeable walls of all the individual moulds are mounted, with a pulp distribution chamber common to the individual moulds of the com pound mould, with pipes connecting the individual moulds to the said distribution chamber and with means'for simultaneously opening the individual moulds.

3. In apparatus for manufacturing hollow bodies from fiber pulp, the combination of a compound mould comprising a plurality of individual moulds having permeable walls, the said compound mould having a unitary outer Wall common to all the individual moulds, on which outer wall the permeable walls of all the individual moulds are mounted, with a pulp distribution chamber common to the individual moulds of the compound mould with pipes connecting the individual moulds to the said distribution chamber, the cross-section, length and curvature of which are adapted to the quantities of fiber pulp required for the individual hollow bodies and with means for simultaneously opening the individual moulds.

4. In apparatus for manufacturing hollow bodies from fiber pulp, a compound mould comprising a plurality of individual moulds having permeable walls, the said compound mould having a unitary outer wall common to all the individual moulds, on which outer wall the permeable walls of all the individual moulds are mounted, in combination with a pulp distribution chamber common to the individual moulds of the compound mould with pipes connecting the individual moulds to the said distribution chamber, the said pipes having substantially equal cross-sections lengths and curvatures and with means for simultaneously opening the individual moulds. l

5. In apparatus for manufacturin hollow bodies from fiber pulp, a compoun mould comprising a plurality of individual moulds having permeable walls, the said compound .pulp distribution chamber common to. the

individual moulds of the compound 'mould and with means for simultaneously opening the individual moulds, the individual moulds being arranged symmetrically with respect to the said distribution chamber so that they are supplied uniformly with the fiber pulp.

6. In apparatus for manufacturin hollow bodies from fiber pulp, a compound mould comprising a plurality of individual moulds having permeable walls, the said compound 5 mould having a unitary outer wall common to all the individual moulds, on which outer wall the permeable walls of all the individual moulds are mounted, in combination with a pulp distribution chamber common to the in- 1 dividual moulds of the compound mould and with means for simultaneously openin the individual moulds, the individual moul s being arranged symmetrically with respect to the said distribution chamber to which they 15 are connected directly, so that they are supplied uniformly with the fiber pulp.

7 In apparatus for manufacturin hollow Y bodies from fiber pulp, a compound mould comprising a plurality of individual moulds 2 having permeable walls, the said compound mould having a unitary outer wall common to all the individual moulds, on which outer Wall the permeable walls of all the individual moulds are mounted, in combination with a 2 pulp distribution chamber common to the individual moulds of the compound mould and having permeable walls and with means for simultaneously opening the individual moulds, the said distribution chamber being 30 connected directly with the individual moulds, whereby a number of moulded hollow bodies is obtained from which the individual hollow bodies can subsequently be detached.

85 In testimony whereof I have signed my name to this specification. l

CARL MUNZE. 

